USB to I2C to communicate to ADAU1701 via SigmaStudio

Hello Mick,

I have never tried to use any other options. We did write the code specifically for the Cypress chip on the USBi so I am pretty sure it will not work. Others on the forum may have experience with this, if you do please chime in.

How long have you had this USBi?

Is it totally dead? Does it light up? Does SigmaStudio "see" it?

Dave T

I can confirm that anything non-Cypress does not work. :-)

As for my USBi... It does light up and the drivers are installed and it seems that the laptop sees it from that perspective.

However, Sigma does not see it.

Hello Mick,

Can you take a screenshot of the configuration window in SigmaStudio? Or just post your project?

This is where the you see the USBi connected to the parts that need to be controlled.

Dave T

Hey Dave,

I actually ended up getting another USBi so for now I am good to go.

What I am having issues with now is figuring out why the LED functionality isn't working like I think it should.... but I could also have it done all wrong too.. :-)

I am attaching it for you to take a look if you want. When testing this on the 1701 mini eval board when I switch the white noise on it stays on even when I press the switch to progress the demux.

Hello Mick,

I am afraid I have no idea what you are trying to accomplish. So I could use some help here to get me up to speed with an overview of what you want to do.

I can see that the noise would stay on because the noise source is being added to the signal right at the output of the DSP. Unless you are planning on the signal of the demux to clip, and thereby gate, the noise?

Add some readback cells or meters to give you a view into what the signal is doing at certain points in the signal flow. That can give you some clues. I have also added switches on the output from the DSP to allow it to pick up signals from other places. An input Mux. This can also be a handy troubleshooting tool.

Dave T